Now Selling Windows and Doors for the Do-It-Yourselfer | house siding grey
See Our Finished Work
You’ll marvel at photos
of our recent projects
Guaranteed Satisfaction
If you find a problem, we’ll
correct it at no cost to you
Get a Free Estimate
We’ll supply a price quote on
your project at no cost to you


Monday – Friday: 8:00 AM – 5:00 PM
Closed Saturday and Sunday

Exterior Finishing Graces Thunder Bay Windows, Doors, Decks & Siding

Your home is one of the biggest investments you will ever make. There is nothing you will put more time and money into, so when it comes to taking care of it, only the best will do.

Windows, Doors, Siding for Thunder Bay
A new window or door is only as good as the company that stands behind it. That’s why Exterior Finishing, Thunder Bay, is the right choice for your house when it comes to:

  • Vinyl windows
  • Entrance doors
  • Storm doors
  • Siding / soffit / fascia / eavestroughing
  • Additions and sunrooms
  • Interior renovations
…and more!

30+ Years of Quality Workmanship
Exterior Finishing has provided Thunder Bay with quality products, exceptional value and outstanding customer service since 1975. You will feel confident in our 5-year labour warranty. See for yourself the work we’ve done for our customers – many of whom are return customers.

Canadian-Made Windows & Doors
When you want quality North Star vinyl windows, Inkster Park entrance doors, Alton storm doors, Royal® Crest vinyl siding or JamesHardie® cement board siding, call Exterior Finishing -- Thunder Bay’s locally owned contracting company.

Visit Our Showroom

Our showroom is at 882 Tungsten Street in Thunder Bay.